Patent Yard Sign in
Expired, full termArchiveSolo inventor

Door lock

US 5,927,770 A · Inventors: Huang; Mao-Lien

USPTO PDF

Overview

9 drawing sheets

Every sheet is in the USPTO PDF.

Open the USPTO PDF

Read the whole patent

Listed from its USPTO record in Patent Yard's full-term archive. Its claims, description and drawings are in the USPTO PDF and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed January 22, 1998. A US utility patent lasts 20 years from filing, so its term ended January 22, 2018.
  • Patents filed before May 29, 2000 can't get a term adjustment for USPTO delays, and any other extension is capped at five years, so it can't still be in force.
  • We haven't checked its US family, and a later related patent could still be in force. We check US rights only.
FiledJanuary 22, 1998
GrantedJuly 27, 1999
Term endedJanuary 22, 2018
Application number09/010551
Classification (CPC)E05B15/102 +2 more
Length12 pages

Sources & verification